Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Playing as Olaf / Brolaf
Last hitting: Easy attack cancel on Olaf.
You should play as defensive as possible, your real dmg come's in at lvl 5.
Take a good look at your hp is it whole or half?
Full hp: Defensive stance, last hit minions and don't auto attack like an idiot.
Half hp: Vicious Strike's for tiny LS and more dmg.
Lvl 5: You should at least get an easy double kill with 240 true dmg with a cooldown on 4 sec.
Boots or Ruby Crystal may change up early game because of the Frozen Mallet is your main item.
Early 10 min: Keep boots and go for Phage and Giants Belt when you can. Buy Berserker's Greaves. depending on the match goes and your farm
Mid 20-27: Frozen Mallet and Warmog's Armor. Dmg low? buy Atma's Ipmaler else it might be a late game item....
End game 35 min+: Stark's for more LS and AS + Banshee's Veil.
Pros / Cons
Pros: Passive (more AS)
Reckless Swing TRUE DMG!!
Cannot be disabled (Ult)
Im OP? Your mom is OP
Cons: No escape taks :/
You will **** brixs (blind)
Vicious Strike's gives a tiny LS :/
Undertow to slow down down your enemy.
Reckless Swing for true dmg.
Vicious Strike's for LS and a BD on 350.
Ragnarok: May be useful for 30 armor pen else its your escape tool.